---
title: kUSBbEndpointDirectionMask
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 18.4+, macOS 10.4+]
path: iokit/1424773-endpoint_descriptor_bits/kusbbendpointdirectionmask
---

# kUSBbEndpointDirectionMask

## Declaration

```occ
kUSBbEndpointDirectionMask = kIOUSBEndpointDescriptorDirection
```